Method of removing phosphorus impurities from yellowcake

ABSTRACT

Phosphorus impurities are removed from yellowcake by dissolving it in hydrochloric or sulfuric acid to a U 3  O 8  assay of at least 150 g/l at a pH of 2; precipitating uranium peroxide with hydrogen peroxide while keeping the pH between 2.2 and 2.6 and recovering the uranium peroxide from the phosphorus impurities remaining in solution.



